Stainless steel alloy 41mm oversized exhaust valve for 2.0 Alfas with standard  9mm stems. This 1mm oversize does not require oversized seats in the head since the stock seat is 41.5mm.

Our 45/41 mm oversize valve combo has done wonders for both street/performance and race engines.

Our test engines with these valves produce 200 HP on our conservative Dyno.

Click here to see our 45 mm companion oversized intake valve.

These features dramatically improve flow.

• 1mm larger window
• 45 degree seating
• exposed stem is reduced to 8mm in port
• special backside design